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KRSR多肽/Ti02纳米管复合涂层对骨髓间充质干细胞粘附与成骨的影响
引用本文:孙圣军,于卫强,张益琳,张富强. KRSR多肽/Ti02纳米管复合涂层对骨髓间充质干细胞粘附与成骨的影响[J]. 口腔医学研究, 2013, 0(10): 887-892
作者姓名:孙圣军  于卫强  张益琳  张富强
作者单位:上海市第九人民医院口腔修复科,上海200011
基金项目:国家自然基金(编号:81070866)上海市科学技术委员会基金资助项目(08DZ2271100)上海市重点学科建设基金资助项目(S30206)上海市重点学科(特色学科)建设基金资助项目(T0202)上海市科委“科技创新行动计划”基础研究重点科技项目(10JC1408600)
摘    要:
目的:本研究在二氧化钛纳米管层表面固定了KRSR序列短链多肽,对此材料的粘附和诱导成骨的能力进行了研究。方法:于二氧化钛纳米管层上共价连接固定多肽后,对材料进行表征,并在试件上接种大鼠骨髓间充质干细胞,使用各种技术对细胞的粘附和分化进行评价。结果:固定KRSR的二氧化钛纳米管层对细胞的粘附率无明显影响,但铺展、骨向分化程度均优于对照组。结论:固定KRSR的二氧化钛纳米管层能够较好地诱导细胞骨向分化,有一定的临床应用价值。

关 键 词:二氧化钛纳米管  KRSR多肽  骨髓间充质干细胞  粘附  成骨

Effects of KRSR Peptides/TiO2 Nanotubes Composite Coating on Adhesion and Osteogenic Differentiation of Mesenchymal Stem Cells.
Affiliation:SUN Sheng-jun, YU Wei -qiang, ZHANG Yi -lin, et al. (The Ninth People'S Hospital, Department of Prosthodontics , Shanghai Jiao Tong University School of Medicine, Shanghai Key Laboratory of Stomatology, Shanghai, 200011)
Abstract:
Objective: To functionalize TiO2 nanotube layers with KRSR and to examine the responses of rat mes- enchymal stem cells to this new material in vitro. Methods: SEM and AFM were used to characterize the materials. Tests were taken to characterize cells adhesion and osteogenic differentiation. Results: Immobilized KRSR increased mesenchymal stem ceils spreading on TiO2 nanotube layers. Moreover, osteogenic differentiation increased on the KRSR-modified TiO2 nanotube layers. Conclusion: KRSR--modified TiO2 nanotube layers have satisfactory bio- logical properties and should be further studied for improved orthopedic applications.
Keywords:TiO2 nanotubes  KRSR peptide  Mesenchymal stem cells  Adhesion  Osteogenic differentiation
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